Ring-testing machine.



D. J. CAMPBELL.

RING TESTING MACHINE. IAPPLIOATION IILED MAR. 7, 1912.

1,032,465., Patented July 16, 1912.

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To all whom it rmy concern:

Be it known that I, DONALD J. CAMPBEIJJ,'.

'a citizen of the United States of America,

residing at Muskegon, in the county of Muskegon and State of Michi an, have invented certain new and use ul Im rovements in Ring-Testing Machines; an I do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to makeand use the same.

My invention relates to improvements in ring testing machines and more particularly to. such machines as shown in my co-pending index with means whereby. they amount of the ring removed to permit contraction and expansion of the-same without permanent change of form or set, may be indicated and to provide the device with various other new and useful features hereinafter omore fully, described and particularly pointed out in the claims,referencebeinghadto the accompanyingdrawings, in w ich:

Figure .1 is a side elevation of a device embodying my invention Fig.2 a plan view of the same; Fig. 3 an enlarged detail in vertical section of the joint to permit the upper jaw ,to swing horizontally; Fig. 4:, an enlarged vertical section on the'line 4-4 of Fig." 1"; and Fig. 5 a detail of the suppor for the vertical scale.

Like numbers refer to like parts in all of 1 represe ts the base of the machine on which the various parts are supported; 2 the lower jaw of the device being substan-. tially semi-circular having two op ositely projecting upwardly curved arms orming the stationary or lower jaw of the device fixed on the base. 3 the upper jaw of the same these jaws bein pivotally connected at one side to permit tl ie upper jaw to swing in a vertical plane.

4 are binding screws in the relatively movable ends of the respective jaws to engage the ring and pivotally connect the same to the jaws at the respective sides of the transverse opening in the ring.

5 is a short-lever'pivoted to one upwardly Specification-of Letters Patent. ap lication med mach 7, 1912. Serial no. ceases.

' cally by the J mat-mm moms.

' Patented July 1a, 1912.

projectin arm of the lower jaw and provided wit a counterbalance weight 6 at the movable end thereof. Mounted on this lever near the pivoted end of the same is a ball bearinlg1 7 secured in lace by a suitable bolt 8 in t c axis thereo This ball bearing provides for horizontal rotation of its rigidly attached thereto. The'pivot of the lever 5 permits the lever and up er jaw 3 to move in a vertical plane an the ball bearing 7 permits the upper jaw to-swing horizontally:

The upper jaw on its movable end. carries a scalebeam 10 on which is a scale to indicate the stress in pounds upon the spring as it is deflected by a greater or less extent by adjustment of the weight 11 on the beam.

The outer end of this beam traverses a vertically disposed bar 12 and extending upper member about the axis of the bolt I and said member carries the, upper jaw 3 from the mid-position upward. On this bar is a scale 13 to indicate in inches and fractions the amount of movement away from each other of the severed ends of the ring anda downwardly extending scale 14 is also on this bar which indicates the inches and fractions of compression or approach of these ends and also indicates the lengthof the segment to be removed froma similar-ring "to provide for the stress indicated on the beam 10 when the gap in the ring is closed by compression.

Oppositely extended segments 15 are attached at the mid-position of the bar 13 and extend horizontally in opposite directions therefrom. On these segments are marked scales indicating the amount of torsional movement of the movable end of the ring to the right or left and serve to test the resilience under torsional stress before producing a permanent distortion or set of the ring.

What I claim is 1. A ring testing machine, comprising a fixed jaw, a movable jaw, means for pivoting said movable jaw to swing both vertiand horizontally, a beam attached to the movable end of said jaw at one end and horizontal and vertical scales. traversed. by the other end of said beamto indicate the extent of'distortion of the ring both diametricallyand laterally.

2. A ring testing machine, comprlslng a fixed jaw, a lever pivoted to the fixed aw to swin vertically, a movable jaw carried lever pivoted to swing horlzontally' thereon and swin 'ng vertically therewith, a scale beam attac ed to the movable jaw, a weight adjustable on the beam a counterbalance wei ht on the lever, indicating scales exten 'ng both vertically and hori zontally traversed by the end of the beam and means for attaching a divided ring to I the jaws.

3. A ring testing machine, comprising fixed semi-circular jaw, a lever pivoted to one end of the same to swing vertically, a

ball bearing mounted on the pivoted end of the lever, a counter-balance weight on the lever, a semi-circular movable jaw mounted on the ball bearing and swinging horizontally thereon and also swinging verticlosing movement of the ring and a horizontal scale also traversed by the end of the beam to indicate the amount of torsional distortion of the ring.

In testimony whereof I aflixmysignature in presence of two Witnesses.

DONALD J. CAMPBELL.

Witnesses HAROLD O. VAN ANTWERP, LUTHER V. MOULTON. 

